Genes controlling pancreas ontogeny.
The pancreas develops from two separate and independent endodermal primordia. The molecular events supporting the early morphological changes that give rise to the formation of the dorsal and ventral pancreatic buds result from coordinated responses to extrinsic and intrinsic signals. The extrinsic signals are involved in processes dictating whether progenitor cells remain as immature or as committed precursors. After specification, the sequential activation of transcription factors determines cell autonomously the commitment and differentiation of these progenitors. During pancreas development, the roles of extrinsic and intrinsic signals are variable, depending on the particular competence of each progenitor cell. We summarize in this review the main events, at the level of gene expression, which are involved in the early stages of pancreas development.
Bonal
Claire
C
Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, Switzerland.
Herrera
Pedro L
PL
D000818:Animals; D002454:Cell Differentiation / Q000235:genetics; D019070:Cell Lineage / Q000235:genetics; D004622:Embryo, Mammalian; D004707:Endoderm / Q000166:cytology / Q000378:metabolism; D018507:Gene Expression Regulation, Developmental; D018398:Homeodomain Proteins / Q000235:genetics / Q000378:metabolism; D007515:Islets of Langerhans / Q000378:metabolism*; D008648:Mesoderm / Q000166:cytology / Q000378:metabolism; D038081:Organogenesis / Q000235:genetics*; D010179:Pancreas / Q000166:cytology* / Q000378:metabolism*; D015398:Signal Transduction / Q000235:genetics; D013234:Stem Cells / Q000166:cytology / Q000378:metabolism / Q000502:physiology; D015534:Trans-Activators / Q000235:genetics / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
D018398:Homeodomain Proteins; D015534:Trans-Activators; D014157:Transcription Factors